Au revoir les enfants tells a heartbreaking story of friendship and devastating loss concerning two boys living in Nazi-occupied France. At a provincial Catholic boarding school, the precocious youths enjoy true camaraderie—until a secret is revealed. Based on events from writer-director Malle’s own childhood, the film is a subtle, precisely observed tale of courage, cowardice, and tragic awakening.

Following a broadcast on the radio, each of the listeners remembers these "little nothings" (the title is borrowed from a play by Mozart), which have often changed their lives. Each of these stories told will prove that a tiny detail in life can change an entire destiny.